attribute mat4 CI_TransfMat;
attribute vec4 CI_Color;
attribute float CI_Enable;
//Q1 : why i must use transMat here ? it doesn't work if i push this
//parameter into shader but not use it here.

void main(void)
{
   if(CI_Enable)
      {
	 gl_Position = gl_ModelViewProjectionMatrix * CI_TransfMat * gl_Vertex ;
	 gl_FrontColor =  CI_Color;
      }
}

